Architectural metal building panel



FIG. 1 is an upper left front perspective view of an architectural metal building panel showing my new design;

FIG. 2 is a left side view thereof; and,

FIG. 3 is a front view thereof.

The evenly broken lines in FIGS. 1-3 depict portions of the architectural metal building panel that form no part of the claimed design. The dash-dot-dash lines depict the boundaries of the architectural metal building panel and form no part thereof. 

CLAIM I claim the ornamental design for an architectural metal building panel, as shown and described. 